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74LVC1G34GV 데이터시트(PDF) 7 Page - NXP Semiconductors |
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74LVC1G34GV 데이터시트(HTML) 7 Page - NXP Semiconductors |
7 / 15 page 74LVC1G34_2 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 02 — 21 May 2007 7 of 15 NXP Semiconductors 74LVC1G34 Single buffer 11. Dynamic characteristics [1] Typical values are measured at Tamb =25 °C and VCC = 1.8 V, 2.5 V, 2.7 V, 3.3 V, and 5.0 V respectively. [2] tpd is the same as tPLH and tPHL. [3] CPD is used to determine the dynamic power dissipation (PD in µW). PD =CPD × VCC2 × fi × N+ ∑(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; ∑(C L × VCC 2 × f o) = sum of outputs. 12. Waveforms Table 8. Dynamic characteristics Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 8. Symbol Parameter Conditions −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ[1] Max Min Max tpd propagation delay A to Y; see Figure 7 [2] VCC = 1.65 V to 1.95 V 1.0 4.0 8.6 1.0 11.0 ns VCC = 2.3 V to 2.7 V 0.5 2.6 4.4 0.5 5.6 ns VCC = 2.7 V 0.5 2.3 4.5 0.5 5.6 ns VCC = 3.0 V to 3.6 V 0.5 2.0 4.1 0.5 5.2 ns VCC = 4.5 V to 5.5 V 0.5 1.6 3.2 0.5 4.1 ns CPD power dissipation capacitance VI = GND to VCC; VCC = 3.3 V [3] -15- - - pF Measurement points are given in Table 9. VOL and VOH are typical output voltage drops that occur with the output load. Fig 7. The data input (A) to output (Y) propagation delays mnb153 tPHL tPLH VM VM A input Y output GND VI VOH VOL |
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